Weather
Seattle, WA Weather Oct. 16–20: 73° Warmth Ends as Rain Returns
Seattle is heading into a noticeable October weather reversal, with temperatures reaching the lower 70s Friday before rain returns Saturday and afternoon highs tumble into the upper 50s by Sunday.
By Caleb Mercer · 2026-10-14T11:07:02.153Z
Seattle is heading into a noticeable October weather reversal, with temperatures reaching the lower 70s Friday before rain returns Saturday and afternoon highs tumble into the upper 50s by Sunday.
The shift will interrupt a stretch of mild, relatively dry weather, bringing cooler afternoons and renewed precipitation chances into early next week.
According to the National Weather Service in Seattle, downtown temperatures are expected to reach approximately 73 degrees Friday under mostly sunny skies before falling to 61 degrees Saturday as rain moves into the area.
The change represents a 12 degree temperature drop in just 24 hours, with additional cooling expected Sunday and Monday.
Saturday Rain Ends the Warm Stretch Friday will offer the warmest conditions of the five day period, with mostly sunny skies and temperatures climbing into the lower 70s.
However, the pattern begins changing late Friday night, when a slight chance of rain develops after 11 p.m.
The National Weather Service places the overnight precipitation chance at 20%, with temperatures remaining relatively mild near 55 degrees.
Rain becomes likely Saturday, particularly before 11 a.m., as mostly cloudy skies accompany a high near 61 degrees.
The cooler, wetter conditions could affect Saturday morning outdoor plans and travel around Seattle, especially during periods of rainfall.
By Saturday night, precipitation is expected to ease, with partly cloudy skies and temperatures dropping to approximately 48 degrees.
Cooler Weather Continues Into Next Week Sunday brings partial sunshine and another temperature decline, with highs near 58 degrees.
A slight chance of rain returns Sunday night before more unsettled conditions develop Monday.
Monday is expected to remain mostly cloudy, with a chance of rain and temperatures reaching only 56 degrees.
Tuesday offers some improvement, with partly sunny skies and a high near 57 degrees, although a slight chance of rain remains.
The supplied National Weather Service forecast applies specifically to downtown Seattle. Temperatures and rainfall timing elsewhere across the Puget Sound region may differ.
For residents planning weekend activities, Friday appears to offer the warmest and driest conditions before Saturday's rainfall and the cooler pattern that follows.
Five Day Weather Outlook: Oct. 16–20 Temperatures below represent National Weather Service forecasts for downtown Seattle, Washington. Conditions elsewhere around Puget Sound may vary.
Friday, Oct. 16: Mostly sunny and warm, with a high near 73°. A 20% chance of rain after 11 p.m. Mostly cloudy overnight, with a low around 55°. Saturday, Oct. 17: Rain likely, mainly before 11 a.m. Mostly cloudy, with a high near 61°. Partly cloudy overnight, with a low around 48°. Sunday, Oct. 18: Partly sunny and cooler, with a high near 58°. A slight chance of rain overnight, with a low around 49°. Monday, Oct. 19: Mostly cloudy, with a chance of rain and a high near 56°. Rain remains possible overnight, with a low around 48°. Tuesday, Oct. 20: Partly sunny, with a slight chance of rain and a high near 57°. Overnight temperatures unavailable.